Subtract 28/16 from 21/6
1st number: 3 3/6, 2nd number: 1 12/16
21/6 - 28/16 is 7/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 16 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 6 × 8 = 48,
21/6 = 21 × 8/6 × 8 = 168/48 - Likewise, for the 2nd fraction, since 16 × 3 = 48,
28/16 = 28 × 3/16 × 3 = 84/48 - Subtract the two like fractions:
168/48 - 84/48 = 168 - 84/48 = 84/48 - After reducing the fraction, the answer is 7/4
- In mixed form: 13/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6-28/16 21/6-56/16 21/12-28/16 21/6-28/32 63/6-28/16 21/6-84/16 21/18-28/16 21/6-28/48 21/30-28/16 21/6-28/80 21/42-28/16